FR2771934A1 - DIVING PALM - Google Patents

Abstract

Diving fin 1 comprising a foot section 2 and a fin section 4 as separate elements which are held in an assembly by a support or hinge structure 5 incorporated in the front of the foot section and in the rear of the section palm. The support or hinge structure comprises an axis or shaft 7 within cylindrical sleeves 6 axially aligned with the axis coupled to the fin section so that the raising or lowering of the fin relative to the palm section foot is performed by manual manipulation of the palm section. A latch is incorporated into the hinge to releasably secure the fin in both an elevated position relative to the foot section and a lowered position projecting forward from the foot section. The latch includes a radial projection 12 secured to the engaging pin with slots 11 formed in one of the sleeves. The slits include a circumferentially extending portion which at opposite ends has axially spaced axially oriented latch slot portions defining two latch positions of the fin. The sleeve members of the hinge have adjacent ends of adjacent pairs spaced apart to allow lateral movement of the palm section into and out of the latch slots.

Description

DIVING PALM

TECHNOLOGICAL BACKGROUND

  The present invention relates to diving fins which are capable of propelling when attached to the feet.

  from the diver when diving into the water.

  The diver must wear numerous equipment depending on the conditions in the water (sea water and fresh water) at the time of his dive in water. Particularly at the feet, the diving fins are fixed in most cases in order to reduce the load or the weight at the feet and obtain a more efficient propulsion.

in water.

  Traditionally, the diving fin of this type consists of a foot section for fixing and detachment at the foot and a palm section incorporated in the front of this foot section, which is molded in one piece by the use of a

  rubber material in most cases.

  The palm section is designed to extend outward horizontally from the front of the above-mentioned foot section, and is fan-shaped or widened with a thickness less than that of the foot section and it becomes progressively greater in width in direction

from its front end.

  Cut out between the foot section and the palm section are water holes that run through the front to the side

opposite of the diving fin.

  However, in the case of a traditional type diving fin, due to the one-piece molded construction of the foot section and the palm section, disadvantages such as

  described below will be suffered.

  1) When the diver moves to dive into the water from a boat or from the shore with the diving fin attached to his foot, due to the fact that the front of the fin section is long, it is likely to trip over even a small obstacle and fall, or due to the fact that the front of the palm section occupies the passage, it is likely that it will encounter difficulties when walking

even on flat ground.

  2) When the diver comes back on board from the water, he usually uses the ladder installed on the boat, but it is likely that he will encounter difficulties in climbing the ladder in the event that he carries the diving fin at its foot, because or due to the fact that the front of the palm section occupies the passage. The diver, therefore, first removes the diving fin from his feet in the water when he is away from the scale, and tightens the diving fin

  to someone on board. Then he swims to the ladder to get on board.

  When performing such actions, it is likely that he will have difficulty keeping his balance due to the heavy equipment he

  door (especially the oxygen cylinder).

SUMMARY OF THE INVENTION

  The present invention is capable of eliminating the drawbacks as mentioned above. More specifically, this invention is designed to provide a diving fin such that it is capable of placing the fin section in a horizontally extending position when in use in water and of placing this fin section in a upright position when in use when the diver is walking on a boat or on the ground. This change of

  positioning can be performed by a one-touch operation.

  The invention is designed to provide a diving fin as it is designed to significantly reduce water resistance at the time of use, and to significantly improve the

propulsion in water.

  The present invention comprises a foot section for attachment or detachment at the foot and a palm section

  separate installed at the front of the foot section.

  The above mentioned palm section is designed to rotate towards the above mentioned foot section by means of a support structure which incorporates a fixing structure or latch means in order to fix the above mentioned palm section above in the horizontal position extending towards the front of the above-mentioned foot section, and also in the position

  vertical towards the rear end of this foot section.

  The support structure mentioned above is incorporated in the front of the foot section as well as in the rear end of the palm section. This support structure comprises coaxial cylinders placed in line in the direction of the width of the above-mentioned diving fin (transversely) and having a certain spacing between them, and an axis or shaft inserted in the cylinders to couple the foot section mentioned above with the

  palm section mentioned above.

  On the other hand, the latch structure or fixing structure consists of cut slots passing through the inside and outside of the cylinder, and a projection installed on the circumference of the axis mentioned above and positioned inside the slots mentioned above. The above-mentioned cut slots consist of a first cut slot to be coupled with the projection

  mentioned above when the palm section mentioned above

  above is in the horizontal position as mentioned above, a second cut-out slot intended to be coupled with the projection

  mentioned above when the palm section mentioned above

  above is in the vertical position as mentioned above, and a third cut slot passing through the first and

second slots.

  The first and second cut slots mentioned above

  above are made along the heart of the axis or shaft of the cylinder mentioned above and are spaced therefrom in the direction of the circumference of the cylinder. Furthermore, the third cut slot is made along the circumference of the cylinder mentioned above and is between the first cut slot and the second cut slot. The first cut slot and the second cut slot mentioned above have a step-like section or

  bearing with the cut slot made wider.

  The first and second cut slots mentioned above

  above are both on the same side extending towards the width of the above-mentioned diving fin from the third cut-out slot or, alternatively, on either side of the

third slot.

  A portion of the rear end of the palm section mentioned above is cut so that the cut-out hole passes through the palm section mentioned above from the front to the rear. The cut-out flap or fin is installed to couple with the cut-out orifice and this cut-out flap is designed to rotate in the direction of the front and rear side of the foot section

mentioned above.

  In another embodiment of this diving fin, the fin section is not only able to rotate in the vertical position but also on the opposite side or sole of the foot section so that the following advantages can be obtained. When the diving fin is used with the fin section turned towards its opposite side, the load or weight at the foot of the diver can be reduced when this diving fin is in the water compared to the case of using this section

  palm in the horizontal position.

  The strength of the foot varies according to the age and other physical conditions of the diver, and it is therefore particularly advisable that the angle of the palm section can simply be fixed according to

  individual needs.

  The invention is designed to provide such a diving fin designed to reduce the load or weight on the foot of the diver and to significantly improve his speed. In this other embodiment, the palm section is designed to rotate relative to the foot section by means of a support structure, and is also designed to be fixed by means of a fixing structure both in the position in which the palm section is vertical with respect to the back or top of the foot section, and in the folded position in which the palm section remains folded towards the opposite side or sole of the foot section. In each of these two positions, the palm section is in the horizontal position extending towards the front of the palm section.

foot mentioned above.

  The folded position mentioned above is obtained by the angle increments designed with respect to the horizontal position mentioned above. And at each of the determined angle increments, the palm section mentioned above is fixed by means of the

fixing structure.

  The palm section mentioned above is fixed by means of a fixing structure at the angle increments determined in the vertical position and in the folded position determined by each angle increment relative to the horizontal position in the direction

of rotation.

  The determined angle mentioned above can be set at 45 at

maximum in increments of 5.

  The palm and foot sections are both designed

  to be fixed or detached at the point of construction.

BRIEF DESCRIPTION OF THE FIGURES

  Figure 1 is a perspective view of a diving fin

  detailed in a first embodiment of the invention in question.

  Figure 2 is a side view of the same diving fin.

  Figure 3 is a perspective and exploded view of the same

diving palm.

  Figure 4 is a perspective view of the fixing structure

from the same diving palm.

  Figure 5 is a diagram of a cross section of Figure

1o 4.

  (a) of Figure 5 is the diagram of a cross section at the level of the axis X - X. (b) of the same Figure is the diagram of a cross section at the level of the axis Y - Y. (c) of the same Figure is the diagram of a cross section at the level of the axis Z - Z, and (d) of the same Figure is the diagram of a cross section at the level of the axis W - W Figure 6 describes details of the fixing structure of the

diving palm.

  (a) of Figure 6 is a diagram for the cutout slot formed in a side U-shape, and (b) of Figure 6 is a diagram for a plan view of the cutout slot formed in the shape of a letter Z. The Figure 7 is a perspective view of a diving fin

  in another embodiment of the invention.

  Figure 8 is a plan view of the palm of Figure 7.

  Figure 9 is a perspective view of the disassembly of the diving fin in another embodiment of the present invention. Figure 10 is a side view of the diving fin of Figure 9. Figure 11 depicts the attachment structure at the side of the foot section of the same attachment fin, and (a) of Figure 11 is the diagram of the cross section and (b) of Figure 11 is the diagram

  a partial enlargement of (a) in Figure 11.

  Figure 12 is a cross section of the attachment structure at the side of the fin section of the same diving fin.

DETAILED DESCRIPTION

  The following is the detailed description of the implementation of

  the invention with reference to the drawings. This explanation is made by means of a palm on the two components of a pair of fins. Figure 1 and Figure 6 show a first embodiment of the invention applied to diving fins 1. In these Figures, the reference numeral 2 represents the foot section for fixing and

  detachment at the foot of the diver.

  This foot section 2 consists of a main body designed for positioning the plunger's foot which covers its foot or line of foot from the end of the toes to the ankle, and its strap or heel fixing strap 3 installed at the interior. But the main body does not have a space designed for positioning the heel. In other words, when the diver's foot is placed in the foot section 2, his heel is exposed to the outside, and is fixed by means of the

heel strap 3.

  The heel fixing strap 3 consists of the strap fixing device 3a installed on each side, right and left, of the main body of the foot section 2, and the strap 3b fixed to the fixing device 3a. The strap or lanyard 3b is attached to the lanyard attachment device 3a on the right and left at the two ends of the lanyard, and is positioned all around the rear side of the foot section 2. The attachment device of the thong 3a is designed to fix the thong 3b in the desired position by extending or bringing it back in its extendable direction. Due to this mechanism, the length of the

  strap 3b is adjustable according to the size of the diver's foot.

  At the front of the foot section 2 is installed the palm section 4 which is designed to be movable by means of a support structure 5. More specifically, the palm section 4 is in the form of a thin plate , and is particularly shaped like a fan or widening with a width which is

  progressively greater from the rear towards the front.

  And at the rear end of the palm section 4, two orifices 4a are formed, through which the water passes in the direction of

their thickness.

  The support structure 5 consists of cylindrical bodies 6 placed at the front of the foot section 2 and at the rear of the palm section 4, and

  the axis or shaft 7 which is inserted in these cylindrical bodies 6.

  The cylindrical bodies 6 are placed in a row or in a line in the width direction of the diving fin 1 (hereinafter referred to as the lateral direction). There are three in total - 6a, 6b and 6c. The outwardly placed bodies 6a and 6b are attached to the side of the palm section 4, and the body 6c placed in between is attached to the side of the foot section 2. There is some spacing between two neighboring cylindrical bodies 6. This spacing is fixed or determined as a function of the length of the lateral displacement to be carried out by the palm section 4 at the time of the rotation of the palm section. The insertion of the shaft or shaft 7, each of the cylinder bodies 6 connecting the foot section 2 with the palm section 4 and makes possible the rotation of the palm section 4 towards the front side and

  on the rear side of the leg section 2.

  Regarding the cylindrical bodies 6, it is possible to place one each at the front of the foot section 2 and at the rear of the palm section 4. It is also possible to place more than three cylindrical bodies, both as the foot section 2 and the palm section 4

  can be connected by inserting the axis or shaft.

  In a support structure 5 as mentioned above, a fixing or latch structure 10 is installed for the section of

  palm 4, the configuration of which will be described below.

  The fixing structure 10, as detailed in Figure 4 and Figure 5, consists of the cut slot 11 which passes through the outside and inside of the cylindrical body 6 (6c) placed in the middle in this example, the projection 12 which appears on the surface of the axis 7, is fixed at this location and is positioned inside the cut slot. This fixing structure 10 is installed only in the cylindrical body 6c positioned in the middle of the cylindrical bodies 6 in this practical example, but can also be installed in any of the cylindrical bodies 6 or can also be installed in each of the bodies

cylindrical 6.

  Regarding the cut slots 11, the first cut slot 13 and the third cut slot 15 are formed successively. More specifically, the first cut slot 13 is formed in a lateral direction as mentioned above (in the direction of the heart of the axis or shaft of the cylindrical bodies 6) and is coupled with the projection 12 at the moment when the palm section 4 is placed in position

  horizontal extending towards the front of the leg section 2.

  The second cut slot is formed in the lateral direction as mentioned above (towards the heart of the axis of the cylindrical bodies 6) and is coupled with the projection 12 at the moment when the palm section is placed in the vertical position in the direction of the rear end of the foot section 2. Of course, the first cut slot 13 and the second slot 14 are formed separately in the direction of the circumference of the cylindrical bodies 6. In addition, the third cut slot 15 is formed between the first cut slot 13 and the second cut slot 14 in the direction of the

  circumference of the cylindrical bodies 6.

  Each of the first cut slit 13 and second cut slit 14 has a step or step section 13a and 10 14a formed at the level where the slot is cut with a greater width. By direct contact of the projection 12 with these step-shaped sections or bearings 13a and 14a, the transition of the projection 12 from the first and second cut slots 13 and 14 to the third slot

cutout 15 can be avoided.

  The following is the explanation of an example of the use of a

  diving fin 1, the construction of which is detailed above.

  The diver attaches or fixes the foot section 2 to each of his feet. In this case, the size of the strap 3b of the strap 3 fastening device must be adjusted according to the size of the feet in order to avoid its detachment. When walking, either on the boat or on the ground before it is ready to dive into the water, it holds the palm section in hand for example, and couples the projection 12 with the second cut slot 14 by turning the palm section with the axis 7 as a starting point towards the rear end of the foot section 2. At this time, the palm section 4 is placed in a vertical position, so that only the sole of the foot section 2 touches the ground of the boat

  or the surface of the ground when the diver is walking.

  In the case of diving in water in the above situation, the diver holds the palm section 4 once more then disconnects

  the coupling of the second cut slot 14 and the projection 12.

  When it moves the position of the projection 12 inside the third cut-out slot 15, it rotates the palm section 4 with the axis 7 as a starting point towards the front side of the foot section 2, and couples the projection 12 this time with the first cut slot 13. At this time, the palm section 4 is placed in a horizontal position extending in the horizontal direction - i.e. in the position

  normal use when diving in water.

  Incidentally, at the time of the transition in position of the projection 12 from the first and second cut slots 13 and 14 to the third cut slot 15, due to the spacing between the two cylindrical bodies 6 (6a, 6b, and 6c), this transition can be made smoothly and smoothly by shifting the position of the palm section 4 slightly in the lateral direction as

mentioned above.

  Whatever the position in which the palm section 4 mentioned above is located, that is to say either in the vertical position or in the horizontal position, the coupling of the projection 12 with the first and second cut slots 13 and 14 will never be disconnected by accident. In other words, since each of the cut slots 13 and 14 has a running section or bearing 13a and 14a formed at the level where the slot is cut with a greater width, due to the self-control of the section of palm 4, the projection 12 is moved towards one or the other of the sections in the form of a step or landing, (that is to say one or the other of the larger widths in the direction of the circumference cylindrical bodies 6). By this displacement, the projection 12 touches the step-like sections or landings 13a and 14a, and thus the displacement in the direction

  side as mentioned above is avoided.

  In the case of the above-mentioned cut slot 11, the first and second cut slots 13 and 14 are formed against the third cut slot 15 in a side U-shape (see Figure 6 (6a)). On the contrary, they can also be Z-shaped in the same lateral direction, but on either side of each other (see Figure 6 (6b)). However, the one having the shape of a U on the side has the following strong point in particular. That is, attach the diving fin 1 as shown in Figure 1 to the left foot, and attach the different diving fin to the right foot with the attachment structure formed symmetrically against the attachment structure 10 for this fin diving 1. In this case, in the two vertical and horizontal positions of the palm section 4, the axis 7, on the right and on the left, makes

  protruding outward in the lateral direction as mentioned above

  above. In this example, the palm section will never be across the path when walking, since the axis does not protrude

between the two feet.

  In the case of the diving fin 1 linked to the first embodiment of the invention, the position of the palm section 4 can be changed by a one-touch operation from its horizontal position in which the palm section 4 s' extends horizontally to its vertical position in which the palm section 4 extends in the vertical position, depending on cases such as the moment of its use in water or the moment of walking on the boat or on the ground. Thus, without removing the diving fin 1 from the feet, walking on the boat or on the ground until diving into the water can be easily carried out. The complicated stain involved in the passage of water to

  the scale of the boat is also eliminated.

  A second embodiment of the invention is explained in

  referring to Figure 7 and Figure 8, as described below.

  The diving fin 21 detailed in the second embodiment of the invention is supplemented by an additional innovation carried out on the diving fin 1 detailed above in the first embodiment of the invention. More specifically, the diving fin 21 is equipped with the cut orifice 4b made by cutting a part of the rear side of the palm section 4 of the diving fin 1, and the cut fin or flap 22 having to be coupled with this orifice. This cut-out fin is designed to rotate from the front side to the rear side of the foot section 2. Since the diving fin 21 is identical to the above-mentioned diving fin 1 for the rest of its construction configuration, we will not describe it any more. In the case of the diving fin 21, and particularly when it is used in water (when the fin section 4 is in the horizontal position), the fin or cut flap 22 vibrates according to the movement of the feet of the diver . With this vibration, the water passes through the orifice cut in the palm section 4. More specifically, when the feet are moved up and down, the water passes from the top to the opposite side of the palm section 4 And conversely, when the feet are moved from bottom to top, the water flows from the opposite side to the top of the palm section 4. At this time, of course, the water also passes through the orifice 4a. For this reason, the water resistance can be further reduced at the time of its use compared to the case where the water only crosses the orifice 4a. This

  allows the diver to obtain a very important propulsion in the water.

  As clearly presented by means of the explanation above, the diving fin according to the invention, being designed to rotate the fin section at its point of construction, authorizes the diver to change the fin section horizontal position to vertical position by one touch operation, in both cases - when using the diving fins in water and when

  when walking on the boat or on the ground.

  Consequently, without removing the diving fin from the feet, walking on the ground or the boat until diving into the water is very easily carried out. The complicated task involved can thus be eliminated. In addition, with the fin or cut-out flap installed, the water resistance at the time of use can be further reduced and more

great propulsion obtained.

  In addition, when the first cut slot and the second cut slot are placed in the same direction, the axis does not

  will not be in the middle of the path when walking.

  A third embodiment of the invention is explained in detail with reference to Figures 9 - 12. This explanation is

  made by considering half a pair of diving fins.

  As previously, the support structure 5 consists of cylindrical bodies 6 placed at the front of the foot section 2 and at the rear of the palm section 4, and the axis or shaft which is inserted in each of these

cylindrical bodies 6.

  The cylindrical bodies 6 are placed in a row or in a line in the direction of the width of the diving fin 1 (hereinafter designated by the term lateral direction). There are three in total - 6a, 6b and 6c. The bodies 6a and 6b placed towards the outside are fixed to the sides of the

foot section 2.

  In more detail, the cylindrical body 6c is fixed to the leg section 2 as described in the cross-sectional diagram of FIG. 11, while the cylindrical bodies 6a and 6b are fixed to the palm section 4 as described in the diagram in lateral section of FIG. 12. In other words, at the front of the leg section 2, the support 8A with an L-shaped cross section with the cylindrical body 6c fixed to it to form a single body is fixed firmly with metal fasteners by a method such as bolts commonly used, while at the rear end of the palm section 4, the support 8B of L-shaped cross section with the cylindrical bodies 6a and 6b attached to it to form a single body is fixed firmly with the metal fasteners by a method

  commonly used such as bolts. A certain spacing remains between two cylindrical bodies neighboring the

  cylindrical bodies 6. This spacing is fixed or determined as a function of the length of the movement to be carried out by the palm section 4 in question at the time of rotation of the section

palm.

  The insertion of the shaft 7 into each of the cylindrical bodies 6 connects the foot section 2 with the palm section 4, and makes the palm section 4 capable of turning towards the front side and the

  rear side of foot section 2.

  As regards the cylindrical bodies 6, it is possible to place one each at the front of the foot section 2 and at the rear of the palm section 4. It is also possible to place more than three bodies cylindrical, as long as the foot section 2 and the palm section 4 can be connected by inserting the axle. In a support structure 5 as mentioned above, is installed a fixing structure 10 'for the palm section 4, the

  configuration is described below.

  In this example, on the cylindrical body 6c positioned in the middle, the cut slot 11 crossing the front to the opposite side is formed as shown in Figure 9. And as shown in Figure 12, in the position where the projection 12 is positioned in this cut-out slot 11, the vice or screw is screwed from the palm section 4 until it reaches the axis inserted in each of the cylindrical bodies 6. At this time, the axis 7 and the palm section 4 are fixed in one piece via the projection 12 at the point of construction. Due to this construction, the axis is designed to rotate in the direction of the circumference, accompanying the rotation of the palm section in one movement.

in one piece.

  Furthermore, on the side of the leg section 2 is formed the orifice 18 which passes through the cylindrical body or cylindrical sleeve 6c mentioned above, the support 8A and the metal fasteners 9A. In this opening 18, from the side of the cylindrical body 6c to the side of the foot section 2, in the appropriate order, are inserted the projecting body 19, the silicone spacer 16 and the bolt 17. more detailed, the bolt 17 is screwed into the above-mentioned hole 18 from the inside of the leg section 2. And the projecting body 19 is positioned at the front of the bolt 17 via an elastic silicone spacer 16. This projecting body 19 is brought into contact with the surface of the axis 7 at its front end, and whether it comes in or out depends on the elasticity of the silicone spacer 16. On the axis 7 are several cut-out connection openings or depressions 7a to be coupled with the projecting body 19. These connection openings 7a are made at equal distance intervals in the direction of the circumference of

axis 7, and with the cut edge.

  These connection openings 7a are made in relation to the angle of rotation of the palm section 4 against the foot section 2. In other words, in this condition, the palm section 4 is designed to rotate between the position vertical in which it is placed vertically against the rear side of the foot section and the inclined position in which it rotates to tilt towards the opposite side of the foot section 2. In these two positions, the palm section mentioned above is in the horizontal position extending

  towards the front of the foot section mentioned above 2.

  In both directions, the palm section mentioned above 4 is designed to be placed at an angle of maximum 45 in increments

of 5.

  By connecting the projecting body 19 to the connection orifices 7a at each of the determined positions on the basis of increments of 5, the palm section is fixed firmly to the foot section 2 at the determined angle. Symmetrically, as the palm section 4 rotates, the protruding body retracts due to the elasticity of the silicone spacer and this activates the release of the connection which makes the palm section 4

ready to shoot.

  When walking on the boat or on the ground until diving into the water, hold palm section 4 by hand and turn it from the axis or tree as a starting point towards I rear end of the foot section 2. At this time, the palm section is placed in the vertical position so that only the

  sole of the foot touches the surface of the boat or the ground.

  Here, in the fixing structure 10 ′, the rotation of the palm section 4 is carried out manually, the connection of the projecting body 19 with the connection orifice 7a of the axis 7 as well as the release of this connection. The connection orifices 7a are formed at the oblique angle of the palm section in the direction of the section of

  leg 2, and the oblique angle covers a maximum of 45 in increments of 5.

  This oblique angle is fixed at 5 at the time when the palm section 4 is connected to the first connection orifice 7a from the horizontal position, and at 10 when it connects to the second connection orifice 7a. In this way, the folded angle is fixed in increments of 5. At the time of such a connection described above, due to the elasticity of the silicone spacer 16, the projecting body 19 is pushed outwards from the orifice 18. At the time of this disconnection, on the contrary, the projecting body 19 is placed inside the orifice 18 in

  due to compression of the silicone spacer 16.

  In the event that the dive is performed in a situation as mentioned above, hold the palm section 4 once more and turn it towards the opposite side of the foot section 2 from the axis as the point of departure. Also on this occasion, it is necessary to accompany the rotation of the palm section manually, as in the case mentioned above, the connection of the projecting body 19 with the connection orifice 7a of the axis 7 as well as the release of this connection. The oblique angle is fixed at 5 at the time of connection of the palm section 4 at the first connection orifice 7a, and at 10 at the time of its connection to the second connection orifice 7a, but on the opposite side to that of the case mentioned above from the horizontal position of the palm section 4. In this way,

  the oblique angle is fixed in increments of 5.

  As explained above, when using the palm section 4 at the angle determined from its horizontal position by rotation towards the opposite side of the foot section 2, the load or weight on the movement of the foot in water can be reduced compared to the case when it is used in its horizontal position. In addition, since the oblique angle of the palm section 4 against the foot section 2 can be fixed in increments of 5, this ensures the diver a versatility or variability in fixing the desired angle depending on the force of his foot and the purpose of the dive. This operation can also be carried out very easily simply by turning the

palm section manually.

  In case of change or exchange of shape of palm section 4 for a different shape or vice versa in case of exchange of the size of foot section 2 for a larger size or vice versa, follow the following procedure. Unscrew the vice or screw 20 with the screwdriver or other, and the connection of the palm section 4, the axis 7 and the projection 12 are released, and particularly the axis 7 inserted in the interior of the cylindrical bodies 6 is released or disconnected. In addition, different forms of foot section 2 and palm section 4 are prepared as an option. After the exchange of one of these for another, insert the shaft 7 in each of the cylindrical bodies 6 once again and connect the palm section 4, the shaft 7 and the projection 12 firmly with the vice or screw as a single body. In this way, the dive in question can be used with a variety of combinations of foot section 2 and palm section 4, that is to say different sizes and shapes according to the preferences of each diver. In addition,

  tasks involved in this exchange are extremely simple and easy.

  As clearly presented by means of the explanation above, the diving fin is designed to make possible the rotation of the fin section towards the back of the foot section and to fix it at the determined angle. This reduces the load on the diver's foot when it is used in the water, and makes it possible to satisfy the preferences of each individual diver. In addition, since the foot section and the palm section are attachable and detachable at the construction point, an easy exchange of these sections for others according to the diver's preferences can be considered as one of the advantages.

  expected from this diving palm.

Claims (11)

  1. - Diving fin (1) comprising a foot section (2) for fixing and detachment at the foot and a fin section (4) installed at the front of the foot section by a support structure (5) , the palm section being rotatable relative to the foot section by means of the support structure between a horizontal position extending forward from the foot section and a vertical position, the support structure comprising latch means for detachably securing the palm section in the horizontal position and in the vertical position.   2. - diving fin according to claim 1, in which: the support structure comprises cylindrical bodies (6) aligned axially at the front of the foot section and at the rear of the palm section, the support structure comprises further an axis or shaft (7) through the cylindrical bodies and supporting the palm section for rotation relative to the foot section, and a pair of the adjacent ends of the cylindrical bodies being laterally spaced.   3. - diving fin according to claim 2, wherein the latch means comprises a slot (11) formed in one of the cylindrical bodies which receives a projection (12) projecting radially from the axis, the slot having a circumferentially oriented portion and a pair of axially oriented portions at opposite ends of the circumferentially oriented portion, the projection being coupled with a first of the axially oriented slots when the palm is in the horizontal position and being coupled with a second of the axially oriented slots the palm is in the vertical position, the portion of slots circumferentially oriented providing a passage for the transition of the projection between the first and the second axially extending slots.   4. - diving fin according to claim 3, wherein the first and second axially oriented slots comprise   step-like sections or landings.   5. - diving fin according to claim 3, wherein the lo first and second axially extending slots project into the   same direction from the circumferentially oriented slot.   6. - diving fin according to claim 3, wherein the first and second axially oriented slots extend in opposite directions from the circumferentially oriented slot portion. 7. Diving fin according to claim 1, in which the fin is formed with at least one orifice (4b) passing through the above and opposite sides of the fin and integrally incorporating a flap (22),   the flap being joined to the palm at a front side of the flap.   8. - Diving fin comprising a foot section and a fin section installed at the front of the foot section by a support structure, the support structure comprising a cylindrical sleeve receiving in a rotary manner an axis by means of which the section of palm can be rotated relative to the foot section, the shaft having a series of circumferentially oriented and spaced depressions (7a), one of the foot sections or palm sections having a protruding member 19 which is resiliently oriented and tilted for   a commitment with the depressions of the axis.   9. - Diving fin according to claim 8, in which the circumferential extent of the depressions is sufficient to allow the rotation of the fin section both upwards and downwards by   compared to the palm section plane of the foot section.   10. - Diving fin according to claim 8, in which   axis depressions are spaced in increments of 5.   11. - Diving fin comprising a foot section and a palm section, the palm section and the foot section being   attachable and detachable by a support structure.